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/*
 * Copyright (C) 2007 Google Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.google.inject.internal;

import com.google.common.base.MoreObjects;
import com.google.common.base.Objects;
import com.google.inject.Binder;
import com.google.inject.Key;
import com.google.inject.spi.BindingTargetVisitor;
import com.google.inject.spi.Dependency;
import com.google.inject.spi.UntargettedBinding;

final class UntargettedBindingImpl extends BindingImpl implements UntargettedBinding {

  UntargettedBindingImpl(InjectorImpl injector, Key key, Object source) {
    super(
        injector,
        key,
        source,
        new InternalFactory() {
          @Override
          public T get(InternalContext context, Dependency dependency, boolean linked) {
            throw new AssertionError();
          }
        },
        Scoping.UNSCOPED);
  }

  public UntargettedBindingImpl(Object source, Key key, Scoping scoping) {
    super(source, key, scoping);
  }

  @Override
  public  V acceptTargetVisitor(BindingTargetVisitor visitor) {
    return visitor.visit(this);
  }

  @Override
  public BindingImpl withScoping(Scoping scoping) {
    return new UntargettedBindingImpl(getSource(), getKey(), scoping);
  }

  @Override
  public BindingImpl withKey(Key key) {
    return new UntargettedBindingImpl(getSource(), key, getScoping());
  }

  @Override
  public void applyTo(Binder binder) {
    getScoping().applyTo(binder.withSource(getSource()).bind(getKey()));
  }

  @Override
  public String toString() {
    return MoreObjects.toStringHelper(UntargettedBinding.class)
        .add("key", getKey())
        .add("source", getSource())
        .toString();
  }

  @Override
  public boolean equals(Object obj) {
    if (obj instanceof UntargettedBindingImpl) {
      UntargettedBindingImpl o = (UntargettedBindingImpl) obj;
      return getKey().equals(o.getKey()) && getScoping().equals(o.getScoping());
    } else {
      return false;
    }
  }

  @Override
  public int hashCode() {
    return Objects.hashCode(getKey(), getScoping());
  }
}